Stopping mechanism for looms.



No. 706,164. Patentad'Aug. 5, I902. H. COTE. STOPPING MEGHANISNLFUR LOUMS.

(Application filed Dec. 23, 901.

(No Model.)

2 Sheeta-$heet l.

QLMWZ No. 7%,!64. A Patented Aug. 5, I902.

H. CGTE. STOPPING IECHANISM FOR LOOMS.

(Ap'plicstion filed D60. 23, 1901.)

2 Sheets-Sheet 2.

(No Model.)

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NlTF STATES PATENT OFFICE.

HENRY COTE, OF VVOONSOCKET, ItI-IODE ISLAND, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

STOPPING MECHANISM FOR LOOMS.'

SPECIFICATION forming part of Letters Patent No. 706,164, dated August 5, 1902.

Application filed December 23, 1901. Serial No. 86,894. (No model.)

To ttZZ whom may concern:

Be it known that I, HENRY COTE, a citizen of the United States, and a resident of VVoonsocket, county of Providence, State of Rhode 5 Island, have invented an Improvement in Stopping Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing 16 like parts.

It is customary to provide looms with brake mechanism operative upon the occurrence of some abnormal condition in the running of the loom- -such, for instance, as warp or weft i5 breakage or improper boxing of the shuttleso that when the power is thrown off the momentum of the moving parts will be quickly overcome and the loom stopped promptly. The lay attains very great momentum in the '20 high-speed loomsnow employed, and very powerful and rapidly-acting brake mechanism must be employed in order that the lay may be brought to a stand quickly.

My present invention has for its object the 2 5 production of novel, highly efficient, and very powerful brake mechanism, and in the present embodiment of the invention I have utilized the movement of the lay to set the brake.

By my invention 1 obviate the use of the usual dagger-protector mechanism, because I not only brake the loom, but brake it so effectually that the lay is prevented from advancing beyond a certain definite point, and 1 thereby prevent a shuttle smash in case the 3 5 shuttle is not properly boxed. By thus combining the functions of brake and protector mechanisms the number of parts are reduced, and the strain on the 'loom is very much less, as the wedging action of the brake 40 reduces the sudden jar and shock present with the usual dagger mechanism.

The various novel features of my invention will be hereinafter fully described, and particularly pointed out in the following claims.

Figure 1 is a left-hand side elevation of a portion of a loom with one embodiment of my invention applied thereto, the lay being shown in section and the loom in running condition with the brake off. Fig. 2 is a simi- 5o lar view, but showing the brake set and the lay stopped at substantially the front center thereof. Fig. 8 is a rear elevation, partly broken out, of the brake or brake-shoe, its fixed support, and the shiftable fulcrum for the brake and Fig. 4 is a front elevation of the link forming a part of the fulcrum-shifting means and the support for the link, the brake-releasing device being shown in part.

The loom-frame A, crank-shaft 0, connected by pitmen (P with the lay-swords A to effect the movement of the lay A the springcontrolled protector rock-shaft 19, mounted on the latter and having an attached binderfinger 19 the binder B of the shuttle-box B only one shuttle-box and binder being shown, the breast-beam A and the holding-plate N for the shipper S, the only member of the stopping means herein shown, may be and are all substantially of well-known construction. Y

I have herein shown an annular and normally-rotating-member 0 fast on the crankshaftas,for instance, a fly-wheel-forming one member of the brake mechanism, and a brake or brake-shoe Dis adapted to cooperate with said member, the brake, as hereinafter termed, being of suitable shape and, if desired, provided on its concave face with a suitable friction-facing d, of leather, wood, or other suitable material. At its back and substantially midway between its ends the brake is enlarged to form a hub d into which is inserted a shiftable fulcrum, shown as a heavy metal disk (1, eccentrically mounted on a stud (1 which passes through upright bearing portions (t of a strong bracket A rigidly secured to the loom side. The disk has secured to or forming a part of it two short oppositely-extended arms (1 01 on one side of the disk and between it and the adjacent bearing portion a (See Fig. 3.)

Referring to Figs. 1 and 2, it will be manifest that the brake D is interposed betweenits fixed support A and the periphery of the rotatable member 0 and that the center of 5 the disk d is eccentric to a line passing through the centers of the shaft 0 and stud d By rotating the disk or fulcrum d it will move the brake toward or from the member tively thereto, and the nearer the disk approaches dead-center the harder will the brake O radially and also circumferentially rela- 10o be pressed against said member 0. This shiftable fulcrum for the brake also constitutes an eccentric connection between the brake and its fixed support A and the shifting of the fulcrum when setting the brake causes the latter to engage the rotatable member with a wedge action, a similar action upon the brake itself being effected by the fulcrum oil when it is turned, so that a very powerful braking action is effected and with great rapidity in application. A linkfis pivotally connected at 3 with the arm (1 of the shiftable fulcrum, the upper end or head f of the link being extended toward the front of the loom, as at f, and provided on its under side with a booklike shoulder f An elongated transverse slotf is made in the base of the head to receive therethrough a guide-studh projecting laterally from a bracket H, bolted to the loom side, as herein shown, a nut 6 and washer 7 preventing displacement of the link. (See Figs. 2 and 4.)

The binder-finger 19 herein shown is provided at its lower end with a rearwardly-ex- I tended upturned hook p, which is depressed below the shoulderf on the link-head when the shuttle is properly boxed, the binder B being pressed rearwardly at such time, so that when the lay heats up the hook will not engage the link. When the shuttle fails to enter the box, however,'the hook p" is raised and engages the shoulderf and as the lay beats up the link f will be moved from the position shown in Fig. 1 into that shown in Fig. 2, acting through the short arm d to turn the fulcrum-disk d in the direction of arrow 10 and set the brake, a very slight angular movement of the fulcrum serving to apply the brake with great power. The braking effect attains its maximum before the lay reaches its front center, bringing the lay to a full stop in time to prevent a shuttle smash if the shuttle is not properly boxed, and the wedging action is so great that I have provided a manually-operated releasing device for the brake.

A long lever M is fulcrumed at m, near its lower end, on the bracket H, the toe of the lever having .a cam m thereon adapted to engage a lateral extension f on the base of the link-head, (see Fig. 4,) the movement of the link to set the brake bringing such extension into the position to be engaged by the cam m", Fig. 2, and when theleverM is pulled forward by the attendant in the direction of arrow the cam acts upon said extension to force the link f back, and thereby release the brake. The lever M is maintained in normal position, Fig. 1, by resting against a stop h on the upper end of bracket H. A rod g is pivotally connected at 4 with the arm of, the upper end of said rod having a longitudinal slot 9 to receive a pin a on the loom-frame, permitting longitudinal movement of said rod, the latter having a lateral hook g thereon to engage the shipper and release it from the usual holding-notch in the plate N when the link is moved in the direction of the arrow by shifting of the fulcrum d to set the brake, so that the shipper is automatically released by or through the operation of the brake mechanism.

I have herein shown and described one practical embodiment of my invention without attempting to describe various modifications thereof, which may be made by those skilled in the art without departing from the spirit and scope of my invention, and the latter is accordingly not restricted to the specific construction and arrangement of parts herein shown and described.

The stoppage of the loom is so eiTectual that I am enabled to do away entirely with the usual dagger-motion now in general use, and by so doing the strain on the parts of the loom due to stoppage is greatly reduced, the wedging action of the brake materialy lessening the sudden jar or shock which always accompanies the operation of the usual dagger-motion.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom, a rotatable member, a brake to cooperate therewith, a fixed support for and relative to which the brake is movable circumferentially of and also toward and from said member, an eccentric connection between the brake and its support, and means acting by or through said connection to automatically set the brake, the compound movement thereof operating to wedge it against the r0- tatable member between the latter and the fixed support.

2. In a loom, a rotatable member, a brake to cooperate therewith, a fixed support for the brake, an. eccentric connection between the latter and its support, and means to turn said connection to apply the brake.

3. In a loom, a rotatable member, a brake to cooperate therewith, a shiftable fulcrum on which the brake is mounted, the brake being interposed between the fulcrum and the rotatable member, and means to directly act upon and shift the fulcrum to thereby apply the brake to and stop rotation of said member.

4. In a loom, a rotatable member, a brake to cooperate therewith, a fixed support, a fulcrum for the brake, eccentrically mounted on said support, and means to turn the fulcrum on the support and thereby apply the brake.

5. In a loom, a normally-rotating member,a brake to cooperate therewith, protector mechanism, a shiftable fulcrum for the brake, and direct connections between the said fulcrum and the protector mechanism, to shift the former and thereby set the brake by or through the operation of the latter.

6. In a loom, a rotatable member, a brake to cooperate therewith, a shiftable fulcrum for the brake, actuating means for and directly connected with said fulcrum and operated by or through the movement of the lay, the lay, and protector mechanism for the loom, to control the operation of said actuating means, the shifting of the fulcrum by the said means setting the brake.

7. In a loom, a normally-rotatable member, a brake to cooperate therewith, the lay, a shipper, a fi-xed support, an eccentric connection between it and the brake, means operated by or through the lay to actuate said connection and set the brake, and means to release the shipper when said eccentric connection is actuated.

8. In a loom, a rotatable member, a brake to cooperate therewith, a shiftable fulcrum for the brake, means to automatically act directly upon and shift the fulcrum and thereby set the brake, and a manually-actuated device to operate through said means to release the brake.

9. In a loom, the lay, an actuating-shaft operatively connected therewith and having an annular member fast upon it, a brake to cooperate with said member, a fixed support, a fulcrum for the brake eccentrically mounted on said support, means operated by or through the movement of the lay to turn said fulcrum and thereby apply the brake, and

protector mechanism for the loom, to control the operation of said means.

10. In a loom, the lay, actuating mechanism therefor, including a rotatable member, a brake to cooperate with said member, a shiftable fulcrum for the brake, and means, including a member mounted on the lay, to act directly upon and shift the fulcrum and there by apply the brake on the forward beat of the lay.

11. In aloom, a normally-rotating member, a brake to cooperate therewith, a shipper, a fixed support, a fulcrum for the brake, eccentrically mounted thereon, whereby rotative movement of the fulcrum applies or withdraws the brake, means operative upon improper boxing of the shuttle to actuate the fulcrum and set the brake, a connection between the fulcrum and shipper, to release the latter when the brake is applied, and manually-operated means to move said fulcrum to release the brake.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. A i

HENRY ooTE. Witnesses:

GEORGE OTIS DRAPER, ERNEST WARREN W001). 

